From: Brian Dennis (brian@xxxxxx)
Date: Tue Jul 23 2002 - 01:49:44 GMT-3
Core-143-SFO(config-router)#no discard-route ?
external Discard route for redistributed summarised routes
internal Discard route for summarised internal routes
"Discard-route external" for when using the "summary-address" command
and "discard-route internal" when using the "area X range" command.
Works like a champ in IOS version 12.1(9).
Brian Dennis, CCIE #2210 (R&S/ISP Dial)
-----Original Message-----
From: nobody@groupstudy.com [mailto:nobody@groupstudy.com] On Behalf Of
Henry Chou
Sent: Monday, July 22, 2002 7:14 PM
To: dlockwood@shastalink.k12.ca.us; lseto@us.cnlink.net;
ccielab@groupstudy.com
Subject: RE: Re Doyle I OSPF
could someone elaborate on how [no] discard-route internal works?
I had no success with "no discard-route internal". I was able to use
"no
discard-route external" to supress null0 routes generated by area xxx
range
external routes, but not internal routes. Any suggestion is
appreciated.
Henry
From: "Dan Lockwood" <dlockwood@shastalink.k12.ca.us>
Reply-To: "Dan Lockwood" <dlockwood@shastalink.k12.ca.us>
To: "Leo Seto" <lseto@us.cnlink.net>, <ccielab@groupstudy.com>
Subject: RE: Re Doyle I OSPF
Date: Mon, 22 Jul 2002 18:26:58 -0700
Thanks so much for the information.
-----Original Message-----
From: Leo Seto [mailto:lseto@us.cnlink.net]
Sent: Monday, July 22, 2002 4:54 PM
To: Dan Lockwood; ccielab@groupstudy.com
Subject: RE: Re Doyle I OSPF
From: http://www.cisco.com/warp/public/104/3.html
Prior to Cisco IOSR Software Release 12.1(6), it was recommended to
manually
configure, on the ABR, a discard static route for the summary address in
order to prevent possible routing loops. For the summary route shown
above,
you can use this command:
ip route 128.213.64.0 255.255.224.0 null0
In IOS 12.1(6) and higher, the discard route is automatically generated
by
default. If for any reason you don't want to use this discard route, you
can
configure the following commands under router ospf:
[no] discard-route internal
or
[no] discard-route external
-----------------------------------------------------
Leo Seto
-----Original Message-----
From: nobody@groupstudy.com [mailto:nobody@groupstudy.com]On Behalf Of
Dan Lockwood
Sent: Monday, July 22, 2002 2:51 PM
To: ccielab@groupstudy.com
Subject: Re Doyle I OSPF
Everyone,
On page 548 of Doyle I it says that when using OSPF area range to
summarize
between areas, a Null route is not automatically created. I tested this
out
with 12.1.12 and found that it is in fact created. Is this a feature
that
was
added in a later release of IOS?
Dan Lockwood
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